Throughout the campaign for the Democratic presidential nomination, former Vermont governor Howard Dean has displayed a tendency to wax self-righteous on the issue of race. He has claimed, falsely, that he is the only candidate to bring up the subject before white audiences. He has upbraided southerners for — in Dean's estimation — deciding elections on "race, guns, God, and gays." And he has famously proclaimed that "dealing with race is about educating white folks." But on Sunday night, at the minority-oriented debate sponsored by the Iowa Brown and Black Presidential Forum, Dean himself came in for a little educating....